The Principle of Introducing Halogen Ions Into β-FeOOH: Controlling Electronic Structure and Electrochemical Performance

被引：0
|
作者：
Dongbin Zhang
Xuzhao Han
Xianggui Kong
Fazhi Zhang
Xiaodong Lei
机构：
[1] Beijing University of Chemical Technology,State Key Laboratory of Chemical Resource Engineering
来源：
Nano-Micro Letters | 2020年 / 12卷
关键词：
β-FeOOH; Halogen ion embedment; Tuning electronic structure; Supercapacitor performance;
D O I：
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学科分类号：
摘要：
Halogen ion-incorporated β-FeOOH(X)s (X = F−, Cl−, Br−) were designed and fabricated successfully and showed good performance for negative electrodes of supercapacitors.The embedment of X− caused the change of Fe–O bond length and structural distortion of β-FeOOH, which resulted in the narrow band gap and good electric conductivity.The presence of unexpected high valence state (3 + δ) Fe element facilitated the adsorption for SO32− species endowing the β-FeOOH(X)s with good wettability in Na2SO3 electrolyte.
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